Can you give us a photo of the inside of the box with the switches in it please?
– ThreePhaseEelJan 3 '16 at 22:22

Added a picture of the inside of the box, thanks! Its hard to see but the switch closest to the bottom is the left switch. The middle is pointing up to the left. The right switch is on the right.
– Merovingian JohnsonJan 3 '16 at 22:40

What is this "load" entity in your diagrams?
– ThreePhaseEelJan 3 '16 at 22:46

I thought the terminology for the wiring that comes into the bottom of the box was "load". I am still learning. It is the Romex coming into the bottom of the box.
– Merovingian JohnsonJan 3 '16 at 22:55

Yeah, you are better off using layman's terms to describe those things rather than use trade terms incorrectly. Your new diagram does the job quite nicely! It looks right and seems to reflect good intuition of how this works. Your concern over wirenut load is also correct - google the specs on the wirenuts. What concerns me is the previously done work in the area of Romex 5, I'd follow that and figure out why they need two hots (perhaps something was once switched).
– HarperJan 4 '16 at 0:36

1 Answer
1

Alright, a note on your diagrams -- line and load are purely electrical designations that have no relevance to the mechanical placement of cables in the box. That said, your box is wired as follows:

"Line 3" is likely the actual circuit coming into the box

"Load" is carrying unswitched power out on both wires (black and red) for some odd reason

"Line 1" goes off to the garage flood light

"Line 2" goes off to the porch light

"Line 4" goes off to the foyer light

Given this, we can determine that your existing plan for installing the timer is incorrect -- the timer's blue load wire needs to go to the black wire coming out of Line 1, while the timer's black line wire needs to go to the junction that feeds all the switches.